65857344834 has 8 divisors (see below), whose sum is σ = 131714689680. Its totient is φ = 21952448276.

The previous prime is 65857344821. The next prime is 65857344877. The reversal of 65857344834 is 43844375856.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

65857344834 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5488112064 + ... + 5488112075.

It is an arithmetic number, because the mean of its divisors is an integer number (16464336210).

Almost surely, 2^65857344834 is an apocalyptic number.

65857344834 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65857344834 is a wasteful number, since it uses less digits than its factorization.

65857344834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10976224144.

The product of its digits is 38707200, while the sum is 57.

The spelling of 65857344834 in words is "sixty-five billion, eight hundred fifty-seven million, three hundred forty-four thousand, eight hundred thirty-four".